I think it’s more of a “willing to put in a consumer product” issue than that they’re unsolved issues. Other brands don’t have the automatic sales that a product with an Apple logo has at whatever price, even for a “Pro” product that can be more expensive. Meta just can’t sell a $3500 headset no matter how good were to be.
That’s one unfortunate downside of carbon steel. Stainless can be a bit lighter, but needs a different technique to get it to not stick (of which several demonstrations can be found on Youtube.)
I have and still use a few, but for new pans I’ll only get bare metal (stainless or Carbon steel) for new pans. One is a Tefal sauté pan. It’s not too thick aluminium and the coating has developed hair cracks over time and the antistick properties aren’t consistent. The other is a small frying pan by a well regarded (local) company and only got good once I started abusing it because I thought it was a write off. That’s the one I mostly use to fry eggs, but you still need oil and a hot pan to have the egg not stick.
Meanwhile I have a seasoned carbon steel frying pan that is more non-stick than either of them, and a cheap carbon steel wok (under €20) that’s also doing great in the non-stick department. And you can clean either of them with a coarse steel wool without destroying the non-stick properties as long as you’re not too rough. And any damage to the seasoning is easily touched up.
Stainless initially stick for meat, but once the crust develops it will detach itself. And sometimes you want some stickage to develop flavour, for gravies etc., which you then deglaze.
I’ve done that multiple times without issue.
It looks to be included. Sadly only supported in a handful fo countries yet.